baber/WOPTO huggingface dataset:
Patent CA-2100832-A1 (CA)
Title: Method and Apparatus for Making Intermetallic Castings
Inventor: CHANDLEY GEORGE D
IPC: B22D27/00
Filed: 1993-07-19
Abstract: The present invention involves a method and apparatus for making an intermetallic casting (e.g. a titanium, nickel, iron, etc. aluminide casting) wherein a charge of a solid first metal protected from air as required is disposed in a vessel, and a charge of a second metal that reacts exothermically with the first metal is melted in another vessel. The molten second metal is introduced to the vessel containing the charge of the first metal so as to contact the first metal.      The first and second metals are heated in the vessel to exothermically react them and form a melt for gravity or countergravity casting into a mold. The exothermic reaction between the first and second metals releases substantial heat that reduces the time needed to obtain a melt ready for casting into a mold. In particular, the exothermic reaction between the first and second metals, in effect, reduces the residence time of the intermetallic melt in the vessel. This reduced residence time, in turn, reduces potential contamination of the melt by reaction with the vessel material. Moreover, the energy requirements needed to heat and melt the metals in the vessel are considerably reduced. Low cost forms of the first and second metals can be used in practicing the invention. As a result, overall casting costs are reduced. The method and apparatus of the invention can be used to produce large numbers of low cost, low contamination intermetallic castings as needed by the automobile, aerospace, and other industries.
Patent CA-2101940-A1 (CA)
Title: Transvenous defibrillation lead and method of use
Inventor: MEHRA RAHUL
IPC: A61N1/05
Filed: 1991-11-21
Abstract: An implantable transvenous defibrillation/cardioversion lead. The lead extends from a proximal end carrying electrical connectors to a bifurcated distal end. Distal to the bifurcation are a first, generally straight leg (11) and a second, curved leg (13). In use, the distal end of the first, generally straight leg is located in the apex of the right ventricle and the distal end of the second generally curved leg is located in the outflow tract from the right ventricle, with the point of bifurcation located approximately adjacent the tricuspid valve. Elongated coil electrodes (30, 32) are provided extending along the straight and curved legs, distal to the point of bifurcation of lead. The lead may be used in conjunction with a subcutaneous or other additional defibrillation/cardioversion electrode.
Patent CA-2104325-A1 (CA)
Title: Method and apparatus for calibrating an ultrasonic leak location
Inventor: KUNZE ULRICH
IPC: G01M3/24
Filed: 1993-08-18
Abstract: Abstract of the Disclosure:            A method for ultrasonic leak location includes showing ultra-sound levels measured at various measuring locations along a measuring segment in a bar diagram.  An intersection of two straight lines in the bar diagram is ascertained to identify a leakage position.  At least an individual ultrasound pickup is calibrated with respect to its amplification factor and/or its location error.  An apparatus for ultrasonic leak location includes a number of ultrasound pickups being disposed along a measuring segment.  Amplifiers and components forming an effec-tive value connect outputs of the ultrasound pickups to a data processing system.  The data processing system calibrates an individual ultrasound pickup with respect to its amplification factor and/or its location coordinate.
Patent CA-2105102-A1 (CA)
Title: Pressure-sensitive contact adhesive and manually-tearable contact adhesive tapes produced therefrom for the embroidery and textile industries
Inventor: GRABEMANN JUERGEN
IPC: C08J7/02
Filed: 1993-08-30
Abstract: Abstract Pressure-sensitive contact adhesive which is characterized in that it comprises a mixture of A)   0 to 90 wt.% acrylic acid ester-vinyl acetate-acrylic acid copolymer with 2 to 8 carbon atoms in the alcohol component of the acrylic acid ester and, relative to the copolymer, 10 to 60 wt.% vinyl acetate and 1 to 10 wt.% acrylic acid (K value according to Fikentscher in the range 50 to 110 - measured according to DIN 51562 in tetrahydrofuran), B)   10  to  80 wt.% acrylic acid ester-acrylic acid-N-methylol methacrylamide copolymer with 4 to 8 carbon atoms in tyhe alcohol component of the acrylic acid ester and, relative to the copolymer, 1 to 10 wt.% acrylic acid and 1 to 10 wt.% self-crosslinking N-methylol  methacrylamide   (K  value  according  to Fikentscher in the range 70 to 130 - according to DIN 51562 in tetrahydrofuran), C)   0 to 90 wt.% acrylic acid ester-ethyl acrylate-N-methylol methacrylamide-acrylic acid copolymer with 4 to 8 carbon atoms in the alcohol component of the acrylic acid ester and, relative to the copolymer, 1 to 10 wt.% acrylic acid and 1 to 10 wt.% self-cross-linking N-methylol methacrylamide and 20 to 80 wt.% ethyl acrylate (K value according to Fikentscher in the range 80 to 130 - measured according to DIN 51562 in tetrahydrofuran), D)   0 to 25 wt.% phthalic acid ester with 2 to 12 carbon atoms in the alcohol component of the ester.          It is suitable for the production of manually-tearable contact adhesive tapes for the embroidery and textile industries.
Patent CA-2105159-A1 (CA)
Title: A method for reducing pitch trouble in mechanical pulp
Inventor: JOKINEN OLLI
IPC: D21C9/08
Filed: 1992-03-19
Abstract: The invention relates to a method for reducing the pitch trouble of mechanical pulp and/or papermaking pulp containing mechanical pulp by treating the pulp or white water with a cellulase/hemicellulase enzyme preparation.
Patent CA-2108499-A1 (CA)
Inventor: BATTEN RONALD W
IPC: B23B31/06
Filed: 1993-10-15
Abstract: ABSTRACT     There is disclosed an improvement to an elongated tool holder such as the tool holders used to secure the immobilizing key used in aerospace fasteners to enable easy ejection of keys which is stuck or jammed in the holder. In these tools, a key is received in a receptacle of a tool holder that is slidably received within an outer, rotationally-driven member which distally supports a socket for engagement with the nut of the fastener of an aerospace fastener.  The key is used to immobilize the bolt for non-interference fit applications of the fastener.  A slot is formed along the shank of the tool holder intersecting the tool receptacle adjacent its interior end to expose the received end of the key and thereby permit insertion of an ejection member or tool to forcefully eject a jammed key from the tool receptacle.
Patent CA-2108942-A1 (CA)
Title: Pulsed-field separation of polysaccharides in capillaries
Inventor: NOVOTNY MILOS V
IPC: G01N27/447
Filed: 1993-10-21
Abstract: PULSED-FIELD SEPARATION OF POLYSACCHARIDES IN CAPILLARIES                 ABSTRACT OF THE DISCLOSURE Polysaccharides are separated in a capillary using pulsed-field electrophoresis.
Patent CA-2111848-A1 (CA)
Title: Connector and control device for fluid machines
Inventor: GEIGER ROBERT E
IPC: F16L37/14
Filed: 1992-06-30
Abstract: A fluid connection and control device for fluid machines permits fluid inlet or outlet connections without the necessity for threaded adapters. This is accomplished by a radially symmetrical body (25) having first and second ends and a central axial fluid passage (28) connecting the ends. The body is appropriately sized for the fluid channel of the fluid machine and has a provision (22) at the first end for attachment of a flexible hose (20). The second end has a provision for a fluid tight seal between the body and the fluid channel as well as a mechanism by which the body is captured within the fluid channel (15) of the fluid machine.  Options are provided for incorporation of a valve mechanism (33) for controlling the fluid flow. The valve mechanism may be incorporated as an integral part of the body or as a separate modular unit (fig. 3) which is retained in the fluid channel (15) by the connector body (25). This provides the advantages of rapid assembly and avoidance of undue stresses to the fluid machine housing, and also provides flexibility of the hose directly adjacent the housing which contributes to improved maneuverability.
Patent CA-2113446-A1 (CA)
Title: Improved solar cell and method of making same
Inventor: AMICK JAMES A
IPC: H01L31/068
Filed: 1993-05-06
Abstract: The cell provided by the invention includes a silicon substrate (20) having a shallow p-n junction (22) adjacent its front surface, a plurality of silver soldering pads (16) bonded to the rear surface (14) of the substrate, an aluminum contact (12) on the rear surface of the substrate having openings (2) that expose at least portions of said silver pads (16), a silver contact (4) surrounded by an antireflection coating on the front substrate, and a glass layer (18) overlying the aluminum contact (12) so as to protect it against oxidation and corrosion. The glass layer (18) has windows (28) exposing portions of the soldering pads for solder attachment of connecting wire ribbons.
Patent CA-2113465-A1 (CA)
Title: Improved thin-film structure for chalcogenide electrical switching devices and process therefor
Inventor: KLERSY PATRICK J
IPC: H01L45/00
Filed: 1992-07-16
Abstract: Disclosed herein is a novel thin-film structure for solid state thin-film electrical switching device fabricated of chalcoge-nide material that overcomes a number of design weaknesses existing in the prior art. The novel structure of the instant invention employs a thin layer of insulating material (16) beneath the body of chalcogenide material (3) so as to carefully define the fila-ment location. Since the filament location has been fixed, switching, due to edge conduction pathways has been substantially eli-minated. At the same time, the use of a thin insulating layer precludes step coverage faults of the prior art. The requirement for the thin layer of insulator material to withstand the switching voltage is addressed through the use of a second thicker layer of in-sulator material (2) which is deposited only after the chalcogenide material (3) has been formed. This improved structure demon-strates the advantages of higher fabrication yields and more repeatable electrical switching characteristics.
Patent CA-2114861-A1 (CA)
Title: Device for orientating the bases and caps of hard gelatin capsules
Inventor: RIBANI ANGIOLINO
IPC: A61J3/07
Filed: 1994-02-03
Abstract: The bases and caps are aligned in two stages, with displacement by first pointed pushers (13-31) into corresponding calibrated horizontal channels (12-29) followed by displacement by second pushers (21-44) into corresponding calibrated vertical and descending channels (312-329). The second., pusher (21) pushes the bases horizontally into the wider terminal part (20) of the said descending channel, where the base is sucked by its sealed end and inserted into the corresponding supporting socket (1), with a vertical disposition and with the opening upwards, The second pusher (44), operating with the caps, acts on the intermediate parts of these with a point (144) which causes the caps to rotate with the opening downwards and transfers them with a vertical disposition into the wider terminal part (42) of the descending channel where the cap is held by a suction tube (46) which inserts it into the corresponding supporting socket (2). The seats (28) to which the caps are fed for orientation are provided at their bases with supports (37-137 or 39-139) which ensure that the caps are stopped at different levels and that they have the best disposition with respect to the first orientating pushes.
Patent CA-2117978-A1 (CA)
Inventor: COLEMAN MICHAEL D
IPC: E05B15/16
Filed: 1994-10-12
Abstract: ABSTRACT OF THE DISCLOSURE       An overhead door holder assembly, for attachment between a door jamb and a door, to hold the door in an open position includes a jamb bracket attached to the door jamb and a jamb arm pivotally attached to the jamb bracket.  A channel assembly having a longitudinally extending channel is attached to the door, and one of a group of modular slide assemblies that interchangeably fit into the channel assembly can be selected for pivot attachment to the jamb arm.  The slide assemblies have attached polymeric blocks that reduce wear caused by sliding components and may have door hold and door stop provisions as well.
Patent CA-2118633-A1 (CA)
Title: Radio transmission method using repeater stations with spectrum reversal
Inventor: MARQUE-PUCHEU GERARD
IPC: H04B7/26
Filed: 1994-03-09
Abstract: A B S T R A C T         The method is used to transmit digital signals by radio over a predefined frequency band between a base station and mobile stations. At least one repeater station is used to receive radio signals transmitted by the base station and to retransmit  radio signals  to the mobile stations over the same frequency band. The spectrum of the radio  signals  transmitted  by  the  base  station  to  the repeater station is reversed relative to the spectrum of the radio signals retransmitted by the repeater station to the mobile stations. The invention is particularly applicable to radiotelephone communications networks.
Patent CA-2119354-A1 (CA)
Title: Process for producing and utilizing an oxygen enriched gas
Inventor: VAN DIJK CHRISTIAAN P
IPC: B01D53/22
Filed: 1992-09-16
Abstract: This invention comprises a method and apparatus for obtaining from air an oxygen enriched gas mixture containing at least 40 mole % nitrogen. The apparatus comprises a gas turbine, an oxygen separation unit which is in fluid communication with the turbine air compressor and means for maintaining a proper mass balance tolerance between the turbine compressor/unit and the turbine energy production unit. This invention also comprises a method and apparatus for recovering large quantities of an oxygen enriched gas from the volume of a compressed air stream produced by a gas turbine by compensation of the mass loss to the energy production unit section thereof by providing means for maintaining the turbine in proper mass and thermal balance as the turbine is utilized to provide the duty/power requirements of a process which utilizes the oxygen enriched gas stream as a reactant.
Patent CA-2119626-A1 (CA)
Inventor: OLMR JAROSLAV J
IPC: F16C7/02
Filed: 1994-03-22
Abstract: ABSTRACT      Disclosed herein is a one bolt connecting rod for an internal combustion engine or a compressor.  The unbolted junction of the connecting rod shank and cap is of the hook-on-lug type.  The bolted junction is of the male/female or type, and the bolt runs longitudinally through the junction. The male/female junction is slightly offset so that tightening the bolt moves the cap both toward the shank and transverse to it so as to tighten the hook-on-lug junction and round out the aperture for the crankshaft.  The cap may be made wider than the shank to enable the cap to serve as an integral spacer.  Also disclosed are an extrusion process and a fine blanking process for making connecting rod parts.
Patent CA-2120667-A1 (CA)
Title: Method for Preventing Inadvertent Betrayal by a Trustee of Escrowed Digital Secrets
Inventor: FISCHER ADDISON M
IPC: G06F1/00
Filed: 1994-04-06
Abstract: The invention employs a voluntary identification/definition phase performed, for example, shortly after a computer is purchased, and a secret information retrieval phase. In the definition phase, the true owner/customer defines an escrow record which provides self-identification data together with encrypted password data. The present invention prompts a user to voluntarily escrow password or other secret information for later retrieval by entering a series of information uniquely describing himself or herself. The identification indicia is combined with the secret information (such as the user's encryption password) and is then encrypted under the control of the trustee's public key. The combined information may be encrypted, for example, under a random symmetric key (such as DES) which is then encrypted under the trustee's public key. After unique identification data has been entered, the user is asked to select a password to protect the system. Thereafter, all the personal identifying data, together with the password, is encrypted with the trustee's public key and is stored, for example, in the user's computer as an escrow security record. The password is then used to encrypt all data on the user's disk. If at some point in time in the future, the user forgets the password, the retrieval phase of the applicant's invention is performed. Under such circumstances, the user contacts the trustees, e.g., the vendor or manufacturer. The trustee utilizes documentary evidence presented by the alleged legitimate user and determines whether such evidence matches with the previously encrypted escrow information stored in the escrow record created by the user. If they agree, then the trustee has confidence that the true owner is making the request, and that revealing the secret key will not betray the owner's interest.
Patent CA-2121220-A1 (CA)
Title: Conduit liner
Inventor: BERRY RICHARD C
IPC: F16L5/00
Filed: 1994-04-13
Abstract: ABSTRACT OF THE DISCLOSURE      A conduit liner having a continuously cylindrical body having a first opening and a diametrically opposed second opening,  a flange which extends circumferentially around the first opening and which is integrally formed with the body, a hollow interior to encapsulate at least one wire extending through the conduit, and a plurality of flexible and collapsible fins extend along and protrude from an external surface of the body.
Patent CA-2122261-A1 (CA)
Title: Modified genes and their expression in plant cells
Inventor: CORNELISSEN MARC
IPC: C12N15/09
Filed: 1992-10-30
Abstract: A DNA fragment, preferably encoding all or an insecticidally-effective part of a Bacillus thuringiensis insecticidal crystal protein, is modified by translationally neutral modifications in cryptic promoters and abortive introns.
Patent CA-2126329-A1 (CA)
Title: Casing brake mechanism for stuffing apparatus
Inventor: POWERS RICHARD G
IPC: A22C11/02
Filed: 1992-08-21
Abstract: An improved casing brake mechanism (10) is provided for selectively engaging and braking the movement of a casing (14) applied over a casing horn (12) during filling of the casing (14). The mechanism (10) includes a pair of resilient, laterally spaced apart, obliquely oriented, annular casing-engaging rings (16, 18) which are selectively compressed and caused to engage a casing (14) by means of a thrust assembly (20) including a pair of separate, co-acting thrust elements (62, 68); the thrust elements (62, 68) are moved in a direction generally parallel with the longitudinal axis of horn (12) by means of a source of pressurized air (P). A  remotely actuatable, three-position valve (80) is preferably employed, which allows alternate and selective connection to the pressurized air source (P), an atmospheric vent (A), and a source of vacuum (V).
Patent CA-2126972-A1 (CA)
Title: Styrene Derivative and Salts Thereof
Inventor: SUZUKI MASAHIRO
IPC: A61P43/00
Filed: 1993-10-29
Abstract: Styrene derivatives represented by general formula (1) or salts thereof, lipoxygenase and cyclooxygenase inhibitors containing an effective dose of such a derivative and a pharmaceutical carrier, and their use for inhibiting lipoxygenase and cyclooxygenase:          (1) [wherein R1 and R2 are the same or different and each is a hydrogen atom, a lower alkoxy group, a halogen atom or a lower alkyl group; R3 are the same or different and each is a hydroxy group, a lower alkoxy group, a lower alkyl group, a lower alkoxycarbonyloxy group, a lower acyloxy group, a di-loweralkyl phosphate residue, or an amino acid residue which may have a protective group for the amino group of the amino acid, said protective group being selected from the group comprising C1-6 lower alkyl, C2-5 lower acyl, C2-5 lower alkoxycarbonyl and a benzyloxycarbonyl; 1 is an integer of 0 to 5; m is an integer of 0 to 5, X represents a formula -N(Z)CO- {wherein Z represents a formula (CH2)nA (wherein A represents a hydrogen atom, a carboxyl group, a di- or mono-loweralkylcarbamoyl group, a carbamoyl group, a lower alkoxycarbonyl group, a cyano group, a lower alkoxy group, a N-acylamino group, a phenyl group which may be substituted, a pyridyl group or a thienyl group, n is an integer of 0 to 5)} or a single bond, Y represents -C(Z')=CH-, -CH=CH-C(Z')=CH-, -C(Z')=CH-CH=CH- (wherein Z' is the same as Z), provided that when n=0, both Z and Z' are not hydrogen atoms, and that when 1 is 0, X represents a single bond)].
Patent CA-2130192-A1 (CA)
Inventor: MEHTA ASPY K
IPC: C08J5/18
Filed: 1993-02-17
Abstract: Disclosed is a process for producing an elastic film of improved unload power which comprises producing a precursor film comprising an elastomer of ethylene copolymerized with a C3 to C20 alpha-olefin comonomer and/or a C3 to C20 polyene comonomer, the elastomer having a density of from 0.855 g/cm3 to 0.900 g/cm3, a melt index of from 0.2 to 1000 dg/min, a molecular weight distribution in the range of about 1.5 to 30, and a Composition Distribution Breadth Index (CDBI) of at least 45 percent; orienting the film to a draw ratio in the range of from 2:1 to 20:1; and annealing the oriented film at a temperature between the softening point and melting point of the elastomer. Further disclosed is an elastic film oriented to a draw ratio of from 2:1 to 20:1 and comprising a copolymer of ethylene polymerized with at least one comonomer selected from the group consisting of C3 to C20 alpha-olefins and C3 to C20 polyenes, the copolymer having a density in the range of 0.855 to 0.900 g/cm3, a melt index in the range of 0.2 to 100, with a composition distribution index of at least 45 percent.
Patent CA-2131846-A1 (CA)
Title: Long-travel rear suspension system for bicycles
Inventor: CASTELLANO JOHN P
IPC: B62K25/28
Filed: 1994-09-12
Abstract: LONG-TRAVEL REAR SUSPENSION SYSTEM FOR BICYCLES            Abstract: An improved bicycle rear suspension system comprises a main frame (20) and a swingarm (22), the former having a seat (32) and the latter having a rear wheel (34) and a pedal crankset assembly (38) mounted on it. The suspension has predetermined proportions which provide long travel, or bump absorbing motion, without exhibiting pedaling-induced motion. The swingarm (22) is hinged to the main frame (20) at a single pivot axis (24). The specified location of the pivot axis is such that the suspension is several times firmer when the rider is standing than when the rider is sitting. This pivot location also ensures that the pedaling forces applied to the swingarm (22) are substantially balanced throughout the pedal stroke. This mechanism also provides a frame geometry which can adjust to different terrain conditions. A lightweight structure for the swingarm (22) provides high strength and stiffness. The swingarm (22), when viewed from the side, presents a diamond shape divided into a plurality of triangles. The forward vertex of the diamond is at the pivot axis, and the rearward vertex is at rear axle (52). The pedal crankset assembly (38) is mounted at the bottom vertex of the swingarm (22) and a shock absorber (36) is attached to the top. The swingarm (22) with a shock absorber (36) and a seat tube (66) forms a truss structure which provides high strength and stiffness, yet is lightweight and easy to manufacture.
Patent CA-2133208-A1 (CA)
Title: A polymer composition comprising a mixture of a crystalline or semi/crystalline polyolefin and a polymer based on vinylaromatic and dicarboxylic acid anhydride monomer units
Inventor: BORGGREVE REINOLDUS J M
IPC: C08L23/02
Filed: 1993-03-25
Abstract: A polymer composition comprising a mixture of a crystalline or semi-crystalline polyolefin A and a polymer B based on vinyl-aromatic and dicarboxylic acid anhydride monomer units. The polymer B  is chemically crosslinked with a compound which contains at least two functional groups which are able to react with the dicarboxylic acid anhydride group of the polymer B; polymer B can also be physically crosslinked.